If you have missed the voter registration deadline, you can still register to vote and a cast a ballot at the same time during early voting or on Election Day. Simply go to your regular polling place or early voting site to register and vote. Contact your Local Election Office if you have any questions.
To register in Idaho you must:
be a citizen of the United States
have resided in Idaho and in the county for 30 days prior to the day of election
be at least 18 years old not have been convicted of a felony, and without having been restored to the rights of citizenship, or confined in prison on conviction of a criminal offense
Local Election Office: This is the government office responsible for running elections in your region. Theses are the best people to contact if you have any questions at all about voting in your state.